E Support Red Blue Yellow Heat Shrink Butt Wire Electrical Crimp Terminal Connector 10-12 14-16 18-22 AWG Gauge Pack of 100 Standard crimp and then seal heat shrink butt connectors Guaranteed to hold the strong crimps Dual-walled design, polyolefin tubing in outside and hot melt adhesive in inside Allows visual inspection, prevents corrosion, and provided a waterproof seal 10-12, 14-16, 18-22 AWG